Just had a root aboot, Wemoto do replacement Stainless M6 Disc Mounting Bolts @ �4.56 each. You'll need 12 of them,I believe,so that's �54.72 in all....plus P&P which is �3.90 in the UK,so that's a grand total of �58.62 to never worry about crappy bolts.....but steep innit

Link to Wemoto page & Bolt >>>>> http://www.wemoto.com/bikes/yamaha/x..._-_individual/ <<<<<

I might just keep whipping mine out & splodging on Hammerite

Not so Cheers - Stim